Mobile terminal and coil antenna module

ABSTRACT

There is disclosed a mobile terminal including a first case comprising a battery loading portion, a battery loaded in the battery loading portion, a second case coupled to the first case and configured to cover the battery, a coil antenna module arranged between the second case and the battery, and a controller electrically connected to the coil antenna module and configured to transmit and receive a signal or receive an electric power, wherein the coil antenna module includes an insulating sheet, a first coil arranged in a surface of the insulating sheet, a second coil arranged in the first coil, a third coil arranged in the second coil, and a magnetic sheet disposed on the surface of the insulating sheet, and ends of the first, second and third coils are arranged in the surface of the insulating sheet or dividedly arranged in both surfaces of the insulating sheet. The mobile terminal may realize the coil antenna module including a plurality of coils configured to perform diverse manners of wireless communication in a limited area.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.16/175,250, filed on Oct. 30, 2018, now U.S. Pat. No. 10,483,625, whichis a continuation of U.S. patent application Ser. No. 15/649,278, filedon Jul. 13, 2017, now U.S. Pat. No. 10,148,001, which is a continuationof U.S. patent application Ser. No. 14/952,803, filed on Nov. 25, 2015,now U.S. Pat. No. 9,761,928, which claims the benefit of earlier filingdate and right of priority to Korean Application Nos. 10-2015-0041004,filed on Mar. 24, 2015, and 10-2015-0048991, filed on Apr. 7, 2015, andalso claims the benefit of U.S. Provisional Application No. 62/128,506,filed on Mar. 4, 2015, the contents of which are all incorporated byreference herein in their entirety.

BACKGROUND OF THE DISCLOSURE Field of the Disclosure

Embodiments of the present disclosure relate to a mobile terminal whichmay facilitate wireless communication and wireless charging, and acontrol method thereof.

Background of the Disclosure

Terminals may be generally classified as mobile/portable terminals orstationary terminals according to their mobility. Mobile terminals mayalso be classified as handheld terminals or vehicle mounted terminalsaccording to whether or not a user can directly carry the terminal.

Mobile terminals have become increasingly more functional. Examples ofsuch functions include data and voice communications, capturing imagesand video via a camera, recording audio, playing music files via aspeaker system, and displaying images and video on a display. Somemobile terminals include additional functionality which supports gameplaying, while other terminals are configured as multimedia players.More recently, mobile terminals have been configured to receivebroadcast and multicast signals which permit viewing of content such asvideos and television programs.

As such functions become more diversified, the mobile terminal cansupport more complicated functions such as capturing images or video,reproducing music or video files, playing games, receiving broadcastsignals, and the like. By comprehensively and collectively implementingsuch functions, the mobile terminal may be embodied in the form of amultimedia player or device.

Moreover, the functions can be improved as such the mobile terminaltransmit and receive information, using an external device and wirelesscommunication. Specific functions of the mobile terminal may beimplemented such as data transmission between terminals. By extension,payment settlement may be processed, using the mobile terminal.

As use of the mobile terminal is diversified, such the mobile terminalrequires much battery use and there are increasing needs for a wirelessrecharge function configured to allow easy battery recharge only whenthe mobile terminal is located near a recharger, without an auxiliarycable.

SUMMARY OF THE DISCLOSURE

An object of the present disclosure is to provide a a coil antennamodule which may facilitate various manners of wireless communicationand wireless recharge, and a mobile terminal including the coil antennamodule.

Embodiments of the present disclosure may provide a mobile terminalincluding a first case comprising a battery loading portion; a batteryloaded in the battery loading portion; a second case coupled to thefirst case and configured to cover the battery; a coil antenna modulearranged between the second case and the battery; and a controllerelectrically connected to the coil antenna module and configured totransmit and receive a signal or receive an electric power, wherein thecoil antenna module includes an insulating sheet; a first coil arrangedin a surface of the insulating sheet; a second coil arranged in thefirst coil; a third coil arranged in the second coil; and a magneticsheet disposed on the surface of the insulating sheet, and ends of thefirst, second and third coils are arranged in the surface of theinsulating sheet or dividedly arranged in both surfaces of theinsulating sheet.

The controller may include frequency matching circuits connected to theends of the first, second and third coils, respectively.

The frequency matching circuit may match the first coil with a frequencyband of 13 MHz or more, the second coil with a frequency band of 100 kHzor less, and the third coil with a frequency band from 100 kHz to 300kHz.

The frequency matching circuit may include a NFC (Near FieldCommunication) module comprising a circuit matching with a frequency ata high frequency band and connected to the first coil, and the frequencymatching circuit may perform near field communication, using the firstcoil.

The frequency matching circuit may include a wireless charging modulecomprising a circuit matching with a frequency at a low frequency bandand connected to the third coil, and the frequency matching circuit maycharge the battery, using the electric power received by the third coil.

A Q-factor of the wireless charging module and a Q-factor of the thirdcoil may be smaller than a Q-factor of the NFC module and a Q-factor ofthe first coil.

At least one of the first, second and third coils may include apredetermined portion arranged in one surface of the insulating sheetand the other portion arranged in the other surface of the insulatingsheet, and the coils arranged in one surface and the other surface ofthe insulating sheet may be connected with each other via a via holepenetrating the insulating sheet.

A predetermined spiral portion of the coil formed in the surface and thecoil formed in the other surface may be symmetrically formed withrespect to the insulating sheet.

One integrated coil is formed by connecting an internal end of thesecond coil with an external end of the third coil, and the controllermay include a wireless charging module comprising a matching circuitmatching a frequency at a low frequency band; a mobile payment antennamodule comprising a matching circuit matching a lower frequency bandthan the wireless charging module; and a switch module connected to anexternal end of the second coil and an internal end of the third coiland configured to selectively connect the wireless charging module andthe mobile payment antenna module with each other.

The magnetic sheet may be a Ferrite sheet, and a magnetic permeability(μr) of the magnetic sheet at frequencies in a range from 50 kHz to 14MHz may be 13˜190.

The magnetic sheet may cover at least one of the first, second and thirdcoils, not the ends of the first, second and third coils.

The number of the third coil windings may be larger than the number ofthe first coil and second coil windings.

The controller may control the first or third coil to transmit acancellation signal configured to cancel the signal transmitted from thesecond coil, when the signal is transmitted from the second coil.

In another aspect of the present disclosure, a coil antenna moduleincludes an insulating sheet; a first coil arranged in a surface of theinsulating sheet; a second coil arranged in the first coil; a third coilarranged in the second coil; and a magnetic sheet disposed on thesurface of the insulating sheet, and ends of the first, second and thirdcoils are arranged in the surface of the insulating sheet or dividedlyarranged in both surfaces of the insulating sheet.

The magnetic sheet may cover at least one of the first, second and thirdcoils, not the ends of the first, second and third coils.

The third coil may be thicker than the first coil and the second coil.

At least one of the first, second and third coils may include apredetermined portion arranged in one surface of the insulating sheetand the other portion arranged in the other surface of the insulatingsheet, and the coils arranged in one surface and the other surface ofthe insulating sheet may be connected with each other via a via holepenetrating the insulating sheet.

A predetermined spiral portion of the coil formed in the surface and thecoil formed in the other surface may be symmetrically formed withrespect to the insulating sheet.

The magnetic sheet may be a Ferrite sheet, and a magnetic permeability(μr) of the magnetic sheet at frequencies in a range from 50 kHz to 14MHz may be 13˜190.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will become more fully understood from thedetailed description given herein below and the accompanying drawings,which are given by illustration only, and thus are not limitative of thepresent invention, and wherein:

FIG. 1A is a block diagram of a mobile terminal in accordance with thepresent disclosure.

FIGS. 1B and 1C are conceptual views of one example of the mobileterminal, viewed from different directions;

FIG. 2 is a perspective diagram illustrating a state of a back coverdecoupled from the mobile terminal in accordance with the presentdisclosure;

FIG. 3 is a back view of a coil antenna module in accordance with thepresent disclosure;

FIG. 4 is a front view of the coil antenna module in accordance with thepresent disclosure;

FIG. 5 is a diagram illustrating a method for processing wireless mobilepayment settlement

FIG. 6 is a graph showing the frequency bands used in the coil antennamodule in accordance with the present disclosure;

FIG. 7 is a diagram illustrating a display unit configured to displaythe functions activated in the mobile terminal in accordance with thepresent disclosure;

FIG. 8 is an exploded perspective diagram illustrating a rea case andthe coil antenna module in accordance with the present disclosure;

FIGS. 9 and 10 are graphs showing methods for strengthening securingwhich are used in the coil antenna module in accordance with the presentdisclosure;

FIG. 11 is a graph showing signal intensity for the frequency band ofeach coil provided in the coil antenna module in accordance with thepresent disclosure; and

FIGS. 12 and 13 are conceptual diagrams illustrating the circuitsprovided in a controller and the coil antenna module in accordance withthe present disclosure.

DESCRIPTION OF SPECIFIC EMBODIMENTS

Description will now be given in detail according to exemplaryembodiments disclosed herein, with reference to the accompanyingdrawings. For the sake of brief description with reference to thedrawings, the same or equivalent components may be provided with thesame reference numbers, and description thereof will not be repeated. Ingeneral, a suffix such as “module” and “unit” may be used to refer toelements or components. Use of such a suffix herein is merely intendedto facilitate description of the specification, and the suffix itself isnot intended to give any special meaning or function. In the presentdisclosure, that which is well-known to one of ordinary skill in therelevant art has generally been omitted for the sake of brevity. Theaccompanying drawings are used to help easily understand varioustechnical features and it should be understood that the embodimentspresented herein are not limited by the accompanying drawings. As such,the present disclosure should be construed to extend to any alterations,equivalents and substitutes in addition to those which are particularlyset out in the accompanying drawings.

It will be understood that although the terms first, second, etc. may beused herein to describe various elements, these elements should not belimited by these terms. These terms are generally only used todistinguish one element from another.

It will be understood that when an element is referred to as being“connected with” another element, the element can be directly connectedwith the other element or intervening elements may also be present. Incontrast, when an element is referred to as being “directly connectedwith” another element, there are no intervening elements present.

A singular representation may include a plural representation unless itrepresents a definitely different meaning from the context.

Terms such as “include” or “has” are used herein and should beunderstood that they are intended to indicate an existence of severalcomponents, functions or steps, disclosed in the specification, and itis also understood that greater or fewer components, functions, or stepsmay likewise be utilized.

Mobile terminals presented herein may be implemented using a variety ofdifferent types of terminals. Examples of such terminals includecellular phones, smart phones, user equipment, laptop computers, digitalbroadcast terminals, personal digital assistants (PDAs), portablemultimedia players (PMPs), navigators, portable computers (PCs), slatePCs, tablet PCs, ultra books, wearable devices (for example, smartwatches, smart glasses, head mounted displays (HMDs)), and the like.

By way of non-limiting example only, further description will be madewith reference to particular types of mobile terminals. However, suchteachings apply equally to other types of terminals, such as those typesnoted above. In addition, these teachings may also be applied tostationary terminals such as digital TV, desktop computers, and thelike.

Reference is now made to FIGS. 1A-1C, where FIG. 1A is a block diagramof a mobile terminal in accordance with the present disclosure, andFIGS. 1B and 1C are conceptual views of one example of the mobileterminal, viewed from different directions.

The mobile terminal 100 is shown having components such as a wirelesscommunication unit 110, an input unit 120, a sensing unit 140, an outputunit 150, an interface unit 160, a memory 170, a controller 180, and apower supply unit 190. It is understood that implementing all of theillustrated components is not a requirement, and that greater or fewercomponents may alternatively be implemented.

The wireless communication unit 110 typically includes one or moremodules which permit communications such as wireless communicationsbetween the mobile terminal 100 and a wireless communication system,communications between the mobile terminal 100 and another mobileterminal, communications between the mobile terminal 100 and an externalserver. Further, the wireless communication unit 110 typically includesone or more modules which connect the mobile terminal 100 to one or morenetworks.

To facilitate such communications, the wireless communication unit 110includes one or more of a broadcast receiving module 111, a mobilecommunication module 112, a wireless Internet module 113, a short-rangecommunication module 114, and a location information module 115.

The input unit 120 includes a camera 121 for obtaining images or video,a microphone 122, which is one type of audio input device for inputtingan audio signal, and a user input unit 123 (for example, a touch key, apush key, a mechanical key, a soft key, and the like) for allowing auser to input information. Data (for example, audio, video, image, andthe like) is obtained by the input unit 120 and may be analyzed andprocessed by controller 180 according to device parameters, usercommands, and combinations thereof.

The sensing unit 140 is typically implemented using one or more sensorsconfigured to sense internal information of the mobile terminal, thesurrounding environment of the mobile terminal, user information, andthe like. For example, a sensing unit 140 may include one or more of aproximity sensor 141, an illumination sensor 142, a touch sensor, anacceleration sensor, a magnetic sensor, a G-sensor, a gyroscope sensor,a motion sensor, a RGB sensor, an IR sensor (Infrared sensor), a fingerscan sensor, a ultrasonic sensor, an optical sensor (e.g., a camera121), a microphone 122, a battery gauge, an environmental sensor (e.g.,a barometer, a hygrometer, a thermometer, a radioactivity detectingsensor, a thermal sensor, a gas sensor and the like) and a chemicalsensor (e.g., an electronic nose, a healthcare sensor, a biometricsensor and the like). Meanwhile, the mobile terminal disclosed in thespecification may collate and use the information sensed by at least twoor more of the sensors.

The output unit 150 is typically configured to output various types ofinformation, such as audio, video, tactile output, and the like. Theoutput unit 150 is shown having a display unit 151, an audio outputmodule 152, a haptic module 153, and an optical output module 154. Thedisplay unit 151 may have an inter-layered structure or an integratedstructure with a touch sensor in order to facilitate a touch screen. Thetouch screen may provide an output interface between the mobile terminal100 and a user, as well as function as the user input unit 123 whichprovides an input interface between the mobile terminal 100 and theuser.

The interface unit 160 serves as an interface with various types ofexternal devices that can be coupled to the mobile terminal 100. Theinterface unit 160, for example, may include any of wired or wirelessports, external power supply ports, wired or wireless data ports, memorycard ports, ports for connecting a device having an identificationmodule, audio input/output (I/O) ports, video I/O ports, earphone ports,and the like. In some cases, the mobile terminal 100 may performassorted control functions associated with a connected external device,in response to the external device being connected to the interface unit160.

The memory 170 is typically implemented to store data to support variousfunctions or features of the mobile terminal 100. For instance, thememory 170 may be configured to store application programs executed inthe mobile terminal 100, data or instructions for operations of themobile terminal 100, and the like. Some of these application programsmay be downloaded from an external server via wireless communication.Other application programs may be installed within the mobile terminal100 at time of manufacturing or shipping, which is typically the casefor basic functions of the mobile terminal 100 (for example, receiving acall, placing a call, receiving a message, sending a message, and thelike). It is common for application programs to be stored in the memory170, installed in the mobile terminal 100, and executed by thecontroller 180 to perform an operation (or function) for the mobileterminal 100.

The controller 180 typically functions to control overall operation ofthe mobile terminal 100, in addition to the operations associated withthe application programs.

The controller 180 may provide or process information or functionsappropriate for a user by processing signals, data, information and thelike, which are input or output by the various components depicted inFIG. 1A, or activating application programs stored in the memory 170. Asone example, the controller 180 controls some or all of the componentsillustrated in FIGS. 1A-1C according to the execution of an applicationprogram that have been stored in the memory 170.

The power supply unit 190 can be configured to receive external power orprovide internal power in order to supply appropriate power required foroperating elements and components included in the mobile terminal 100.The power supply unit 190 may include a battery, and the battery may beconfigured to be embedded in the terminal body, or configured to bedetachable from the terminal body.

At least some of such the components may be executed in cooperation tooperate and control the mobile terminal in accordance with the variousembodiments which will be described hereafter or to embody a controlmethod of such the mobile terminal. The operation, the control or thecontrol method may be realized in the mobile terminal by the driving ofone or more application programs stored in the memory 170.

Referring now to FIGS. 1B and 1C, the mobile terminal 100 is describedwith reference to a bar-type terminal body. However, the mobile terminal100 may alternatively be implemented in any of a variety of differentconfigurations. Examples of such configurations include watch-type,clip-type, glasses-type, or as a folder-type, flip-type, slide-type,swing-type, and swivel-type in which two and more bodies are combinedwith each other in a relatively movable manner, and combinationsthereof. Discussion herein will often relate to a particular type ofmobile terminal (for example, bar-type, watch-type, glasses-type, andthe like). However, such teachings with regard to a particular type ofmobile terminal will generally apply to other types of mobile terminalsas well.

In this instance, the terminal body may be understood as a conceptconsidering the mobile terminal 100 as at least one assembly.

The mobile terminal 100 will generally include a case (for example,frame, housing, cover, and the like) forming the appearance of theterminal. In this embodiment, the case is formed using a front case 101and a rear case 102. Various electronic components are incorporated intoa space formed between the front case 101 and the rear case 102. Atleast one middle case may be additionally positioned between the frontcase 101 and the rear case 102.

The display unit 151 is shown located on the front side of the terminalbody to output information. As illustrated, a window 151 a of thedisplay unit 151 may be mounted to the front case 101 to form the frontsurface of the terminal body together with the front case 101.

In some embodiments, electronic components may also be mounted to therear case 102. Examples of such electronic components include adetachable battery 191, an identification module, a memory card, and thelike. Rear cover 103 is shown covering the electronic components, andthis cover may be detachably coupled to the rear case 102. Therefore,when the rear cover 103 is detached from the rear case 102, theelectronic components mounted to the rear case 102 are externallyexposed.

As illustrated, when the rear cover 103 is coupled to the rear case 102,a side surface of the rear case 102 is partially exposed. In some cases,upon the coupling, the rear case 102 may also be completely shielded bythe rear cover 103. In some embodiments, the rear cover 103 may includean opening for externally exposing a camera 121 b or an audio outputmodule 152 b.

The cases 101, 102, 103 may be formed by injection-molding syntheticresin or may be formed of a metal, for example, stainless steel (STS),aluminum (Al), titanium (Ti), or the like.

As an alternative to the example in which the plurality of cases form aninner space for accommodating components, the mobile terminal 100 may beconfigured such that one case forms the inner space. In this example, amobile terminal 100 having a uni-body is formed in such a manner thatsynthetic resin or metal extends from a side surface to a rear surface.

If desired, the mobile terminal 100 may include a waterproofing unit(not shown) for preventing introduction of water into the terminal body.For example, the waterproofing unit may include a waterproofing memberwhich is located between the window 151 a and the front case 101,between the front case 101 and the rear case 102, or between the rearcase 102 and the rear cover 103, to hermetically seal an inner spacewhen those cases are coupled.

In the mobile terminal 100 may be provided in a display unit 151, firstand second sound output units 152 a and 152 b, a proximity sensor 141,an illumination sensor 142, an optical output unit 154, a first andsecond cameras 121 a and 121 b, first and second manipulation units 123a and 123 b, a microphone 122 and an interface unit 160.

Hereinafter, as shown in FIGS. 1b and 1c , the mobile terminal 100having the following arrangement of the components will be described.Specifically, in a front surface of the terminal body may be arrangedthe display unit 151, the first sound output unit 152 a, the proximitysensor 141, the illumination sensor 142, the optical output unit 154,the first camera 121 a and the first manipulation unit 123 a. In alateral surface of the terminal body may be arranged the secondmanipulation unit 123 b, the microphone 122 and the interface unit 160.In a rear surface of the terminal body may be arranged the second soundoutput unit 152 b and the second camera 121 b.

It is to be understood that alternative arrangements are possible andwithin the teachings of the instant disclosure. Some components may beomitted or rearranged. For example, the first manipulation unit 123 amay be located on another surface of the terminal body, and the secondaudio output module 152 b may be located on the side surface of theterminal body.

The display unit 151 displays (i.e., outputs) the information processedin the mobile terminal 100. For example, the display unit 151 maydisplay execution screen information of the application program drivenin the mobile terminal 100 or UI (User Interface) information and GUI(Graphic User Interface) information according to such execution screeninformation.

The display unit 151 outputs information processed in the mobileterminal 100. The display unit 151 may be implemented using one or moresuitable display devices. Examples of such suitable display devicesinclude a liquid crystal display (LCD), a thin film transistor-liquidcrystal display (TFT-LCD), an organic light emitting diode (OLED), aflexible display, a 3-dimensional (3D) display, an e-ink display, andcombinations thereof.

The display unit 151 may be implemented using two display devices, whichcan implement the same or different display technology. For instance, aplurality of the display units 151 may be arranged on one side, eitherspaced apart from each other, or these devices may be integrated, orthese devices may be arranged on different surfaces.

The display unit 151 may also include a touch sensor which senses atouch input received at the display unit. When a touch is input to thedisplay unit 151, the touch sensor may be configured to sense this touchand the controller 180, for example, may generate a control command orother signal corresponding to the touch. The content which is input inthe touching manner may be a text or numerical value, or a menu itemwhich can be indicated or designated in various modes.

The touch sensor may be configured in a form of a film having a touchpattern, disposed between the window 151 a and a display on a rearsurface of the window 151 a, or a metal wire which is patterned directlyon the rear surface of the window 151 a. Alternatively, the touch sensormay be integrally formed with the display. For example, the touch sensormay be disposed on a substrate of the display or within the display.

The display unit 151 may also form a touch screen together with thetouch sensor. Here, the touch screen may serve as the user input unit123 (see FIG. 1A). Therefore, the touch screen may replace at least someof the functions of the first manipulation unit 123 a.

The first audio output module 152 a may be implemented in the form of aspeaker to output voice audio, alarm sounds, multimedia audioreproduction, and the like.

The window 151 a of the display unit 151 will typically include anaperture to permit audio generated by the first audio output module 152a to pass. One alternative is to allow audio to be released along anassembly gap between the structural bodies (for example, a gap betweenthe window 151 a and the front case 101). In this case, a holeindependently formed to output audio sounds may not be seen or isotherwise hidden in terms of appearance, thereby further simplifying theappearance and manufacturing of the mobile terminal 100.

The optical output module 154 can be configured to output light forindicating an event generation. Examples of such events include amessage reception, a call signal reception, a missed call, an alarm, aschedule notice, an email reception, information reception through anapplication, and the like. When a user has checked a generated event,the controller can control the optical output unit 154 to stop the lightoutput.

The first camera 121 a can process image frames such as still or movingimages obtained by the image sensor in a capture mode or a video callmode. The processed image frames can then be displayed on the displayunit 151 or stored in the memory 170.

The first and second manipulation units 123 a and 123 b are examples ofthe user input unit 123, which may be manipulated by a user to provideinput to the mobile terminal 100. The first and second manipulationunits 123 a and 123 b may also be commonly referred to as a manipulatingportion, and may employ any tactile method that allows the user toperform manipulation such as touch, push, scroll, or the like. The firstand second manipulation units 123 a and 123 b may also employ anynon-tactile method that allows the user to perform manipulation such asproximity touch, hovering, or the like.

FIG. 1B illustrates the first manipulation unit 123 a as a touch key,but possible alternatives include a mechanical key, a push key, a touchkey, and combinations thereof.

Input received at the first and second manipulation units 123 a and 123b may be used in various ways. For example, the first manipulation unit123 a may be used by the user to provide an input to a menu, home key,cancel, search, or the like, and the second manipulation unit 123 b maybe used by the user to provide an input to control a volume level beingoutput from the first or second audio output modules 152 a or 152 b, toswitch to a touch recognition mode of the display unit 151, or the like.

As another example of the user input unit 123, a rear input unit (notshown) may be located on the rear surface of the terminal body. The rearinput unit can be manipulated by a user to provide input to the mobileterminal 100. The input may be used in a variety of different ways. Forexample, the rear input unit may be used by the user to provide an inputfor power on/off, start, end, scroll, control volume level being outputfrom the first or second audio output modules 152 a or 152 b, switch toa touch recognition mode of the display unit 151, and the like. The rearinput unit may be configured to permit touch input, a push input, orcombinations thereof.

The rear input unit may be located to overlap the display unit 151 ofthe front side in a thickness direction of the terminal body. As oneexample, the rear input unit may be located on an upper end portion ofthe rear side of the terminal body such that a user can easilymanipulate it using a forefinger when the user grabs the terminal bodywith one hand. Alternatively, the rear input unit can be positioned atmost any location of the rear side of the terminal body.

Embodiments that include the rear input unit may implement some or allof the functionality of the first manipulation unit 123 a in the rearinput unit. As such, in situations where the first manipulation unit 123a is omitted from the front side, the display unit 151 can have a largerscreen.

As a further alternative, the mobile terminal 100 may include a fingerscan sensor which scans a user's fingerprint. The controller 180 canthen use fingerprint information sensed by the finger scan sensor aspart of an authentication procedure. The finger scan sensor may also beinstalled in the display unit 151 or implemented in the user input unit123.

The microphone 122 is shown located at an end of the mobile terminal100, but other locations are possible. If desired, multiple microphonesmay be implemented, with such an arrangement permitting the receiving ofstereo sounds.

The interface unit 160 may serve as a path allowing the mobile terminal100 to interface with external devices. For example, the interface unit160 may include one or more of a connection terminal for connecting toanother device (for example, an earphone, an external speaker, or thelike), a port for near field communication (for example, an InfraredData Association (IrDA) port, a Bluetooth port, a wireless LAN port, andthe like), or a power supply terminal for supplying power to the mobileterminal 100. The interface unit 160 may be implemented in the form of asocket for accommodating an external card, such as SubscriberIdentification Module (SIM), User Identity Module (UIM), or a memorycard for information storage.

The second camera 121 b is shown located at the rear side of theterminal body and includes an image capturing direction that issubstantially opposite to the image capturing direction of the firstcamera unit 121 a. If desired, second camera 121 a may alternatively belocated at other locations, or made to be moveable, in order to have adifferent image capturing direction from that which is shown.

The second camera 121 b can include a plurality of lenses arranged alongat least one line. The plurality of lenses may also be arranged in amatrix configuration. The cameras may be referred to as an “arraycamera.” When the second camera 121 b is implemented as an array camera,images may be captured in various manners using the plurality of lensesand images with better qualities.

As shown in FIG. 1C, a flash 124 is shown adjacent to the second camera121 b. When an image of a subject is captured with the camera 121 b, theflash 124 may illuminate the subject.

As shown in FIG. 1B, the second audio output module 152 b can be locatedon the terminal body. The second audio output module 152 b may implementstereophonic sound functions in conjunction with the first audio outputmodule 152 a, and may be also used for implementing a speaker phone modefor call communication.

At least one antenna for wireless communication may be located on theterminal body. The antenna may be installed in the terminal body orformed by the case. For example, an antenna which configures a part ofthe broadcast receiving module 111 may be retractable into the terminalbody. Alternatively, an antenna may be formed using a film attached toan inner surface of the rear cover 103, or a case that includes aconductive material.

A power supply unit 190 for supplying power to the mobile terminal 100may include a battery 191, which is mounted in the terminal body ordetachably coupled to an outside of the terminal body.

The battery 191 may receive power via a power source cable connected tothe interface unit 160. Also, the battery 191 can be recharged in awireless manner using a wireless charger. Wireless charging may beimplemented by magnetic induction or electromagnetic resonance.

The rear cover 103 is shown coupled to the rear case 102 for shieldingthe battery 191, to prevent separation of the battery 191, and toprotect the battery 191 from an external impact or from foreignmaterial. When the battery 191 is detachable from the terminal body, therear case 103 may be detachably coupled to the rear case 102.

An accessory for protecting an appearance or assisting or extending thefunctions of the mobile terminal 100 can also be provided on the mobileterminal 100. As one example of an accessory, a cover or pouch forcovering or accommodating at least one surface of the mobile terminal100 may be provided. The cover or pouch may cooperate with the displayunit 151 to extend the function of the mobile terminal 100. Anotherexample of the accessory is a touch pen for assisting or extending atouch input to a touch screen

FIG. 2 is a diagram illustrating a state where a battery 191 and a coilantenna module 200 are exposed via a back cover 103 of a mobile terminalin accordance with one example of the mobile terminal 100.

The coil antenna module 200 includes a plurality of coils 221, 222 and223 formed on an insulating sheet. The coils are arranged in a spiralwith respect to one point and distances from the center to the coils aredifferent from each other. The coil antenna module 200 may be arrangedbetween the battery 191 and the rear case 102, in case the mobileterminal 100 is an integrated battery type. It may be arranged betweenthe battery 191 and the back cover, in case the mobile terminal 100 is aseparable battery type.

FIG. 2 illustrates the state where the back cover 103 is decoupled andexposed to a rear surface of the rear case 102. In this instance, a USIMcard loading portion 105, a memory card loading portion 106, a batteryloading portion 104 and rear surface terminals 240 and 250 linkable withthe coil antenna module 200 and the like may be provided in a rearsurface of the rear case 102. When the mobile terminal 100 is anintegrated battery type, the rear case 102 may not be decoupled and theUSIM card loading portion 105 and the memory card loading portion 106may be insertedly loaded in the lateral surface, not loaded in the backsurface.

As the functions of the mobile terminal 100 become diversified, thefunctions configured to communicate with an external device and a serverwirelessly are becoming more important. Also, wireless communicationmanners become more diversified. For such wireless communicationtechniques, diverse antennas may be provided.

Each of the antennas may be connected to the controller and it may matcha predetermined frequency receivable and transmittable by a circuitmodule connected to the controller 180. The controller 180 may transmitand receive a signal via the antennas.

The coil antenna module 200 arranged between the rear cover 103 or andthe rear case may be usually used in wirelessly communicating with anexternal device located in a near filed and it may receive theelectricity provided by a wireless recharge device located in a in anear filed, rather than the signal transmission and reception.

The coil antenna module 200 includes a terminal 226 exposed outside toaccess to a printed circuit board (i.e., the controller 180) mounted inthe case. In case the mobile terminal is the integrated battery type,the terminal 226 of the coil antenna module 200 may be connected to theprinted circuit board in a manner of soldering. In case the mobileterminal is the separable battery type, the terminal 226 of the coilantenna module 200 is configured to contact with a connection pinexposed to a back side of the rear case when the rear cover 103 iscoupled.

The coil antenna module 200 may be provided in a surface of the mobileterminal 100 to secure a wide area for radio wave reception and tominimize the effect of the other electronic components. Also, a magneticsheet 230 may be further provided between the battery 191 and the coilantenna module 200 to prevent wireless communication efficiency frombeing deteriorated by the interference in the components mounted in themobile terminal or to prevent errors of the components.

FIG. 3 is a back view of the coil antenna module 200 in accordance withthe present disclosure. FIG. 4 is a front view of the coil antennamodule 200 in accordance with the present disclosure.

The coil antenna module 200 may include the spiral coil 221, 222 and 223formed in a surface of the insulating sheet 210. The coil may consist ofa first coil 221 arranged in the outmost position, a third coil arrangedin the innermost position and a second coil 222 arranged between thefirst coil 221 and the third coil 223.

Each of the coils may be connected to a frequency matching circuitprovided in the controller 180. The frequency matching circuit includesa capacitor and a resistance. In other words, the frequency band of thereceivable and transmittable signal may be varied according toinductance (L) of the coil, capacitance (C) of the capacitor and areactance (R) of the resistance. The coil is functioned as inductor of aresonance circuit so that the coils may be wound different times to haveoptimal inductance values, respectively, and that each of the coils mayhave a different thickness and a different diameter.

The first coil 221 may use NFC (Near Filed Communication) as antenna.NFC supports contactless NFC (Near Field Communication) between theterminals 100 located within or out of 10 cm. NFC uses a signal at ahigh frequency band of 13.56 MHz, with a short communication range.Accordingly, NFC has the advantage of strong security. Only whenlocating the terminals close, preset functions may be executed and NFChas another advantage of easy simple use.

NFC may be operated in a card mode, a reader mode or a P2P mode. Tooperate NFC in the card mode, the mobile terminal 100 may furtherinclude a security module configured to store card information. In thisinstance, the security module may be UICC (Universe Integrated CircuitCard, e.g., SIM (Subscriber Identification Module) or USIM (UniversalSIM)), Secure Micro SD, a sticker and other physical medias. Or, thesecurity module may be a logical media embedded in the mobile terminal100 (e.g., embedded SE (Secure element)). Data exchange based on SWP(Single Wire Protocol) may be performed between NFC and the securitymodule.

When operating NFC in the card mode, the mobile terminal may deliver thestored card information to an external device like a conventional ICcard. When operating NFC in the reader mode, the mobile terminal mayread data from an external tag. When operating NFC in the P2P(Peer-to-Peer) mode, the mobile terminal may implement P2P communicationwith another mobile terminal and connection may be created between themobile terminal and the mobile terminal for P2P communication.

Not only the shape of the coil but also the size and connection methodof the capacitor provided in the frequency matching circuit of thecontroller 180 connected to the first coil may have effect on the firstcoil's transmission and reception of the high frequency signal such asNFC.

The second coil 222 may be used in mobile payment. FIG. 5 is aconceptual diagram to describe the mobile payment function of thepresent disclosure. Such the mobile payment function is configured toprocess mobile payment by transmitting a signal having paymentinformation to a payment terminal 400. As one example of the mobilepayment, the mobile terminal instead of a magnetic card transmits asignal corresponding to the magnetic variation generated in swiping amagnetic card in a card reader and processes mobile payment.

The speed of the user's card swiping in the card reader is generally 0.1second or more and the number of the stripes provided in a magnetic bandis limited, so that the frequency of the magnetic variation generated inthe card swiping in the card reader may be 100 kHz or less. Accordingly,the mobile payment uses a signal at a low frequency band in a range of100 kHz or less.

It is embodied that the first coil 221 is functioned as NFC and thesecond coil 222 is functioned for the mobile payment in one embodiment.However, the positions of the two coils may be reversed to function thesecond coil 222 as NFC and to use the first coil 221 in process themobile payment function. When the signal for the mobile payment failedto be transmitted accurately, another signal having a stronger intensityshown in FIG. 5(b) may be transmitted. Unless mobile payment isprocessed by the firstly transmitted signal, the user may touch are-send button to set to transmit a stronger signal.

The third coil 223 is arranged in the center of the coil arrangementarea and used as an electric power receiving coil for wireless electricpower receiving, i.e. wireless charging. When the third coil 223 entersinto a magnetic field formed in the wireless electric power receivingcoil, an induced electromotive force is generated to recharge thebattery 191. The location relation between the wireless electric powerreceiving coil of the terminal and a wireless electric power receivingcoil of a wireless charger is important in the wireless electric powertransmission and reception. The wireless electric power receiving coilmay be arranged in the central area of the mobile terminal 100 not to beoverlapped with the other coils. However, the location of the wirelesselectric power coil is not limited thereto and vice versa locations maybe allowable.

Wireless charging technology may use frequencies at two band widths.According to the Wireless Power Consortium (WPC) standard, the wirelesscharging technology may use frequencies at a band width from 110 kHz to205 kHz. According to the Power Matters Alliance (PMA) standard, thewireless charging technology may use frequencies at a band width from227 kHz to 278 kHz.

FIG. 6 illustrates the frequency ranges used in the mobile payment andthe wireless charging. The frequency band used in the NFC or the mobilepayment is not wide. In contrast, the wireless charging has to operatein a wide frequency band so as to use the two standards.

As an indicator for indicating the width of the frequency band, there isa Q-factor (Quality factor). The Q-factor is a value showing sharpnessof resonance in a resonance circuit. The Q-factor shows a differencebetween a resonance frequency at which the maximum electric currentflows and a resonance frequency at which an electric current as large as0.71 times of the resonance frequency and it also shows a rate of theresonance frequencies.

As the Q-factor is getting larger, it means that only frequencies at anarrower range are used. For NFC, only frequencies at a specific rangeare used and there is not difficulty in transmitting and receiving asignal even when the Q-factor is substantially small. Also, the NFC hasan advantage of less interference in signals at different specificranges.

However, so as to use not only WPC standard and PMA standard, thefrequency band used in the wireless charging has to be wide to transmitand receive signals at a wide frequency band (from 110 kHz to 280 kHz)mentioned above, so that a resonance circuit having a small Q-factor maybe configurated. The Q-factor may be in proportion or reverse proportionto the size of the inductor according to serial connection or parallelconnection between the coil and the capacitors provided in the frequencymatching circuits 251, 252 and 253 provided in the controller 180.

The resonance frequency may be calculated based on followingMathematical Equation 1. As the inductance (L) is getting smaller, ahigh frequency signal may be transmitted and received.

$\begin{matrix}{f_{o} = \frac{1}{2{\pi \cdot \sqrt{L \cdot C}}}} & \left\lbrack {{Mathematical}\mspace{14mu}{Equation}\mspace{14mu} 1} \right\rbrack\end{matrix}$

The inductance (L) may be varied according to the number of the coilwindings. As the number of the coil windings is getting larger, theinductance (L) is getting larger. Accordingly, the number of the coilwindings may be increased to gain a large inductance (L) in case of alow frequency signal used in the wireless charging. The number of thefirst coil windings used in the NFC may be decreased.

The number of the first coil windings is the smallest and the number ofthe third coil windings is the largest. For example, the number of thefirst coil 221 windings is 3 to 5 and the number of the second coil 222windings is 5 to 7. The number of the third coil 223 windings is 10 to13.

The frequencies may be varied according to the capacitances andresistances of the matching circuits 251, 252 and 253 as well as to theinductances of the first 221 to the third coil 223. However, theembodiment is not limited thereto.

A thick coil may be used as the third coil to move as many electrons aspossible when the third coil 223 is located in the magnetic field of thewireless charging.

A terminal 226 is provided in an end of each coil to connect each coilto the controller 180. As shown in FIGS. 3 and 4, the terminals 226 arearranged collectively for easy and convenient connection. For sucharrangement, internal ends and external ends of the coils are extendedand connected to the terminals 225 arranged collectively.

At this time, the internal end of each coil has to be extended acrossthe spiral arrangement of the coil. The second coil 222 and the thirdcoil 223 arranged in the inner portion have to be extended across thefirst coil 221 and the second coil 222. Both sides of the insulatingsheets 210 may be used not to overlap the line connected to the internalend of the coil and the terminal 226 with the spiral portion of thecoil.

The second coil 222 and the first coil 221 formed in a back surface ofthe insulating sheet 210 shown in FIG. 3 have an omitted spiral portionto avoid the overlapping. A predetermined portion of the first or secondcoil connected to the coil formed in the rear surface is provided in afront surface of the insulating sheet 210. A line extended from theinternal and external ends of the first coil 223 and connected to thecontroller 180 may be formed, using the front surface of the insulatingsheet 210.

In one embodiment shown in FIG. 4, only the portion of the coil notformed in the rear surface of the insulating sheet 210 may be formed inthe front surface of the insulating sheet 210. The coil may besymmetrically formed in the rear surface and the front surface of theinsulating sheet 210 so that the area of the coil can be increased. Thecoil formed in the front surface and the coil formed in the rear surfacemay be connected with each other through the via hole penetrating theinsulating sheet 210.

In case of using a flexible printed circuit board, a metallic materialis coated on the two surfaces of the insulating sheet and etched to forma coil pattern for the coil antenna module. The metallic material coatedon one surface of the insulating sheet is partially etched, not etchingall of the coated metallic material, so that the symmetric coil patternformed in the front and rear surfaces of the insulating sheet may berealized.

The terminals 226 are connected ends of the three coils and accessed toa main board, i.e. the controller 180 when coupled to the mobileterminal 100. The terminals 226 may be dispersed and arranged in the twosurfaces of the insulating sheet 210 or arranged in the front surface ofthe insulating sheet as shown in FIG. 4. In other words, when the coilantenna module 200 is mounted to the mobile terminal 100, the pluralityof the terminals 226 may be arranged toward the front surface of themobile terminal 100. That is to form the terminals 226 in the directiontoward the main board so as to facilitate the connection with the mainboard mounted in the case 101 and 102.

A cut-off switch 257 a, 257 b and 257 c may be disposed between thecontroller and each of the coils 221, 222 and 223. The cut-off switches257 a, 257 b, and 257 c may be provided in only one of the coils. Thethree coils 221, 222 and 223 are arranged close. When an electriccurrent flows to one of the coils arranged close, the other coils couldbe affected and the activated function(s) could not be executedproperly. The cut-off switches 257 a, 257 b and 257 c for connecting themodules 251, 252 and 253 related with the activated functions with thecoils 221, 222 and 223 may be used in preventing that.

When the user activates the function to use, the cut-off switches 257 a,257 b and 257 c may be switched on to connect the coil(s) related to thecorresponding function with the controller. When the user switches offthe function not to use, the cut-off switches 257 a, 257 b and 257 c maybe switched off.

The wireless charging function usually keeps the activated state and theconnection state between the wireless charging module 251 and the thirdcoil 223. The mobile payment or NFC function has to operate only afterthe user authentication for information security. Accordingly, the firstcoil 221, the NFC (Near Field Communication) module 253, the second coiland the mobile payment module 252 have to keep an OFF state.

When the user activates the mobile payment function, one cut-off switch257 a for connecting the wireless charging module with the first coil isopen and switched into the OFF state and another cut-off switch 257 bfor connecting the mobile payment module 252 with the second coil 222 isclosed and switched into an ON state.

FIG. 7 is a diagram illustrating the display unit displaying theactivated functions of the mobile terminal in accordance with thepresent disclosure. the user is provided with a notification via thedisplay unit 151 or the sound output unit 152 to notify the user that aspecific function is activated, so that the user may be notified of theconnection between the coils 221, 222 and 223 related with the activatedone of the NFC, wireless charging and mobile payment functions with themodules 251, 252 and 253.

The notification may be a notifying window 1511 for notifying the userof change of the current state, when the activated function is changed.The notification includes indicators 1513 for indicating the currentactivated functions.

FIG. 8 is an exploded perspective diagram illustrating the rear case andthe coil antenna module 200 in accordance with the present disclosure.The coil antenna module 200 may further include a magnetic sheet 230.The magnetic sheet 230 is disposed to cover at least one of the coilsand configured to reduce the effect of the operating coil on theelectronic components mounted therein or the effect of the othercomponents.

The magnetic sheet 230 is a thin sheet formed of a magnetic metallicmaterial and polymer mixture and it reduces the noise of the electronicequipment. The function of the magnetic sheet 230 is varied according tothe magnetic permeability of the magnetic metal added to the magneticsheet 230.

A Ferrite sheet is usually used as the magnetic sheet 230. Ferrite isthe generic term for the magnetic ceramic having iron oxide and it hasbeen used as a memory material for a magnetic tape and a computer. Also,Ferrite may be used as an electromagnetic wave absorber.

The Ferrite sheet is the thin sheet formed of the mixture of themetallic powder having Ni, Zn, Mn, Mg, Cu and the like and the pastepolymer.

The magnetic sheet 230 has a magnetic permeability variable according tothe type of the frequency. When using the same property magneticmetallic material, the thickness of the magnetic sheet is variedaccording to the frequency to absorb the electromagnetic wave.

Conventionally, one magnetic sheet for the NFC (Near FieldCommunication) antenna and another magnetic sheet for the wirelesscharging coil are used. The magnetic sheet used in the NFC (Near FieldCommunication) antenna has a high magnetic permeability at a highfrequency and the magnetic sheet for the wireless charging coil has ahigh magnetic permeability at a low frequency.

However, the magnetic sheet in accordance with the present disclosurehas a high magnetic permeability at all of the frequency of the mobilepayment (the low frequency from 50 kHz to 100 kHz), the frequency forthe wireless charging (the low frequency from 100 kHz to 200 kHz) andthe frequency for the NFC (Near Field Communication) (the high frequencyof 13.56 MHz).

Accordingly, the magnetic sheet 230 having a high magnetic permeabilityat the frequency range from 50 kHz to 14 kHz may be used. Theappropriate magnetic permeability (μ r) for removing the noise is130˜190 and the magnetic sheet 230 having the magnetic permeability (μr) of 130 to 190 at a frequency range from 50 kHz to 14 MHz is used.

The elements or amount of the magnetic material mixed for the magneticsheet 230 may be varied for the magnetic sheet 230 having the goodmagnetic permeability at both of the high and low frequencies or thethickness of the magnetic sheet 230 may be physically increased.

For example, a material having a different molecule structure from thematerial used for the conventional magnetic sheet may be mixed with themagnetic material such as Ferrite or a different amount of the magneticmaterial may be mixed. Alternatively, the magnetic sheet 230 inaccordance with the present disclosure may be formed thicker than themagnetic sheet 230 used for the conventional NFC (Near FieldCommunication) antenna, so that the transmission and receptionefficiency of the low and high frequencies transmitted or received bythe coils of the coil antenna module 200.

The mobile payment performed by the mobile payment module 252 and thesecond coil 222 may be configured to transmit a signal having peculiaridentification mobile payment information. When the transmitted signalis spread far, a third person senses the signal and acquires thepeculiar identification payment information so that there is concernabout the peculiar identification payment information theft.Accordingly, there are needs for a security device to stop the theft.

A signal for concealing the signal spread nearby may be generated so asto prevent the signal from being transmitted to the other terminals notto the payment terminal. FIG. 9 is a graph to describe a securitystrengthening method used by the coil antenna module 200 related to thepresent disclosure. (a) is a signal transmitted from the second coil 222and (b) is a signal transmitted from the first coil 221 or the thirdcoil 223.

The signal for cancelling the signal transmitted from the second coil222 may be transmitted from the first coil 221 or the third coil 223.The cancellation signal may be transmitted from the first coil 221arranged in the more outward portion than the second coil 222, to cancelthe outwardly spread signal out of the signals transmitted from thesecond coil 222.

In other words, when the cancellation signal is transmitted from theother coils, the other signals except the signal traveling straighttoward the payment terminal 400 as shown in FIG. 10 are cancelled.Accordingly, the disadvantage of the payment information theft generatedby acquiring the payment signal transmitted from the second coil nearthe payment terminal 400.

FIG. 11 is a graph showing signal intensity for the frequency band ofeach coil provided in the coil antenna module 200 in accordance with thepresent disclosure. (a) of FIG. 11 is the intensity of the signal whenthe wireless charging is performed after the third coil 223 is connectedto the wireless charging module 251. (b) of FIG. 11 shows the intensityof the signal when the first coil 221 connected to the NFC (Near FieldCommunication) module 253 is operating as the NFC antenna.

When charging the mobile terminal wirelessly as shown in FIG. 11(a), theresonance frequency band may be set wide enough for the two standardscharging mentioned above and the wireless charging module can operate ata wide frequency band. When operating at the wide frequency band range,the Q-factor of the antenna is small. The Q-factor of the antennaoperating in a narrow frequency band range shown in FIG. 11(b) is large.

The third coil 223 and the wireless charging module adjust theinductance and the capacitance to gain the preset charging efficiency ina range from 100 kHz to 200 kHz to set a large Q-factor. In thisinstance, even the signals near the frequency band width (100 kHz˜200kHz) used for the wireless charging module 251 may be affected.

As shown in FIG. 11(a), the mobile payment operates in a range offrequencies at 100 kHz or less and the operating third coil 223 might beaffected.

To solve the disadvantage, the second coil 222 and the third coil 223may be used as one coil. FIGS. 12 and 13 are conceptual diagramsillustrating the circuits provided in the controller 180 and the coilantenna module in accordance with the present disclosure. FIGS. 12 and13 show an integrated coil 224 formed of the internal end of the secondcoil 222 and external end of the third coil 223 connected to each otherand configured to operate at the low frequency band, and a first coil221 configured to operate at a low frequency band.

The length of the integrated coil 224 is different from the sum of thesecond coil 222 and the third coil 223 mentioned in the embodiment. Theintegrated coil 224 may be used for the mobile payment or the wirelesscharging by cases. The integrated coil 224 connected to the controller180 has the wireless charging module 251 and the mobile payment module252 arranged in parallel, so that it can be selected to the wirelesscharging module 251 or the mobile payment module 252 selectively.

The integrated coil 224 may be selectively connected to the two modules,using a switch 255. The integrated coil 224 is normally connected to thewireless charging module 251. When the user docks the mobile terminal100 in a wireless charging device, the mobile terminal 100 isautomatically charging. When the user uses the mobile payment function,the user executes a button or an application and inputs a command forthe mobile payment to the mobile terminal 100. Then, the position of theswitch 255 is changed to transmit a mobile payment signal and the mobilepayment module 252 and the integrated coil 224 are connected with eachother. In this instance, the sufficient number of the terminals 226exposed to the coil antenna module 200 is four.

FIG. 13 shows one integrated coil configured of the first through thirdcoils. In this instance, the three functions may be performed by the oneintegrated coil 225. The frequency band of the signal used for eachmodule is different from the others. The matching circuit adjusts thesignals at the different frequency bands and controls signals at adifferent frequency band to be transmitted to the corresponding module.

When using the NFC function or the mobile payment function in the statewhere the wireless charging function is always activated in case ofusing the one integrated coil 225, the switch 255 is operated to switchthe modules 251, 252 and 253 connected to the integrated coil 225. Inthis instance, only the one integrated coil 225 is used and twoterminals are sufficient.

Alternatively, a terminal may be further provided in a middle portion ofthe integrated coil 225 according to the function to use and theposition of the integrated coil connected to each module may be changed.When the module is connected to the middle portion of the integratedcoil 225, the length of the coil, i.e. a spiral portion used in signaltransmission and reception may be adjusted.

Under such the structure, the wireless charging function and the mobilepayment function cannot be performed simultaneously and they are notaffected by each other. Accordingly, there is no interference betweenthe second coil 222 and the third coil 223.

As mentioned above, the coil antenna module 200 having the plurality ofthe coils for performing diverse manners of wireless communication in alimited area.

Moreover, the noise generated by the interference between the coils maybe removed, using the switch module 255, and the disadvantage of themobile payment signal exposure may be prevented, using the other coil.Accordingly, the payment security reliability may be enhanced.

As mentioned above, the heat generated in the drive chip of the mobileterminal may be effectively emitted. Only the portion of the mobileterminal, where the drive chip is loaded, may be prevented from beingheated when the user is using the mobile terminal and the othercomponents may be prevented from being damaged by the heat. In addition,the shock applied to the frame may not be transferred to the drive chipbut be absorbed by the flexible material having a high compressibility.When a particular feature, structure, or characteristic is described inconnection with any embodiment, it is submitted that it is within thepurview of one skilled in the art to affect such feature, structure, orcharacteristic in connection with other ones of the embodiments.

What is claimed is:
 1. A mobile terminal comprising: a display; abattery; a rear cover disposed to cover the battery; a coil antennamodule positioned between the battery and the rear cover, wherein thecoil antenna module comprises: a base sheet; a first coil, a secondcoil, and a third coil, each positioned on the base sheet; a magneticsheet positioned over the first coil, the second coil, and the thirdcoil; and a controller electrically coupled to the coil antenna moduleand configured to: provide a near field communication (NFC) functionusing the first coil; automatically charge the battery using the thirdcoil when the mobile terminal is placed at a wireless charging device;cause the second coil to not be connected to a payment module while thebattery is charged; cause the second coil to be connected to the paymentmodule according to a payment function; transmit a payment signal by thesecond coil by connecting the second coil to the payment module inresponse to an input; provide the NFC function with a frequency band of13.56 MHz or more; provide the payment function with a frequency band of100 kHz or less; and provide the automatic charging of the battery witha frequency band according to a Wireless Power Consortium (WPC) standardor a Power Matters Alliance (PMA) standard.
 2. The mobile terminal ofclaim 1, wherein the coil antenna module is further configured to causethe first coil to be connected to the NFC function while the second coilis connected to the payment function or the third coil is connected tothe wireless battery charging function.
 3. The mobile terminal of claim1, wherein the magnetic sheet does not cover ends of the first coil, thesecond coil, or the third coil.
 4. The mobile terminal of claim 1,wherein a number of windings of the third coil is larger than a numberof windings of the first coil and is larger than a number of windings ofthe second coil.
 5. The mobile terminal of claim 4, wherein the thirdcoil is disposed within the first coil.
 6. The mobile terminal of claim1, wherein the NFC function is independent of the wireless batterycharging function and the second coil does not affect the wirelessbattery charging function.
 7. A mobile terminal comprising: a display; abattery; a rear cover disposed to cover the battery; a controller; acoil antenna module comprising a plurality of coils included at least afirst coil and an integrated coil positioned between the battery and therear cover, wherein the coil antenna module is configured to: provide anear field communication (NFC) function, wherein the NFC function isprovided with a frequency band of 13.56 MHz or more using the firstcoil; automatically perform a wireless charging function of the batteryusing the integrated coil when the mobile terminal is placed at awireless charging device, wherein the wireless charging function isperformed with a frequency band according to a Wireless Power Consortium(WPC) standard or a Power Matters Alliance (PMA) standard; and perform awireless payment function for transmitting a payment signal using theintegrated coil, wherein the wireless payment function is performed witha frequency band of 100 kHz or less, wherein the controller isconfigured to control the coil antenna module such that the wirelesscharging function and the mobile payment function cannot be performedsimultaneously.
 8. The mobile terminal of claim 7, wherein the coilantenna module is further configured to provide the NFC function whilethe wireless payment function or the wireless charging function is beingperformed.
 9. The mobile terminal of claim 7, wherein an input to themobile terminal is required to enable the coil antenna module to performthe wireless payment function, and wherein the wireless chargingfunction is performed automatically without input to the mobile terminalwhen the mobile terminal is placed at a wireless charging device. 10.The mobile terminal of claim 9, wherein the input required to enable thecoil antenna comprises an authentication of a user of the mobileterminal.
 11. The mobile terminal of claim 7, wherein the coil antennamodule comprises a first portion positioned at a first surface of thebase sheet and a second portion positioned at a second surface of thebase sheet, wherein the first portion and the second portion areconnected with each other via a via hole formed within the base sheet.12. The mobile terminal of claim 7, wherein a number of windings of thethird coil is larger than a number of windings of the first coil and islarger than a number of windings of the second coil.
 13. A mobileterminal comprising: a display; a battery; a rear cover disposed tocover the battery; and a coil antenna module positioned between thebattery and the rear cover, wherein the coil antenna module comprises: afirst coil and an integrated coil; a magnetic sheet positioned over thefirst coil and the integrated coil; a controller electrically coupled tothe coil antenna module and configured to: provide a near fieldcommunication (NFC) function using the first coil; and selectivelyconnect the integrated coil to a wireless charging module or a paymentmodule, wherein the battery is automatically charged using theintegrated coil when the mobile terminal is placed at a wirelesscharging device, and the integrated coil is not connected to the paymentmodule while the battery is charged; provide the NFC function with afrequency band of 13.56 MHz or more; provide a payment function by thepayment module with a frequency band of 100 kHz or less; and provide theautomatically charging of the battery with a frequency band according toa Wireless Power Consortium (WPC) standard or a Power Matters Alliance(PMA) standard.
 14. The mobile terminal of claim 13, wherein theintegrated coil comprises three terminals, and one of the paymentfunction or the wireless charging function is provided based on whichtwo of the three terminals of the integrated coil are used.
 15. Themobile terminal of claim 13, wherein the first coil is configured toprovide the NFC function while the wireless payment function or thewireless charging function is being performed by the integrated coil.16. The mobile terminal of claim 14, wherein an input to the mobileterminal is required to enable the integrated coil to perform thewireless payment function, and wherein the wireless charging function isperformed automatically without input to the mobile terminal when themobile terminal is placed at a wireless charging device.
 17. The mobileterminal of claim 16, wherein the input required to enable the coilantenna comprises an authentication of a user of the mobile terminal.